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. D. S. JACOBUS HEATING SURFACE CLEANING DEVICE 3 Sheets$heet 2 Dec. 9, 1930.

Filed Sept. 26 1923 INVENTOR Dec. 9, 1930. D. s. JACOBUS 1,784,629

EATING SURFACE CLEANING DEVICE Filed Sept. 26, 1925 3 Sheets-Sheet 3 Fig. 4

35 Fig;

I 12 :4 Z5 {gamma/1111111111 Q INVENTOR v ouw ATTORNEYS Patented Dec. 9, 1930 UNITED STATES PATENT OFFICE DAVID S. JAGOBUS, OE JERSEY CITY, NEW JERSEY, ASSIGNOR TO THE BABCOCK & WIL- COX COMPANY, BAYONNE, NEW JERSEY, A CORPORATION OF NEW JERSEY V HEATING SUREAGE-CLEANING DEVICE Application filed September 26, 1923. Seria1 No. 664,944.

My present invention relates to devices for cleaning the heatingsurfaces of steam boilers, boiler economizers, air heaters and the like, and will be best understood from the following description andthe annexed drawings, in which Fig. 1 is'a vertical seer tion of a boiler economizer to which my in vention has been applied Fig.2 isan enlarged section through oneof the'nozzles'of an element; Fig. 3 is a side elevation of the economizer shown in Fig. 1, with some of the parts broken away; Fig. 4 is an enlarged side view of an element control head, such as is shown in Figs. 1 and 3, some of the parts being broken away in Fig. 1; Fig. -5 is a front ele vation of Fig. 4, and Fig. 6 is an enlarged longitudinal section of the inner end of one of the element supports shown inFig. 1.

Like reference characters indicate like 2 parts in the several views.

In the illustrative embodiment, the walls 10, 11, 12 and 13 define a flue through which waste gases from a boiler may be passed, the plate 14: separating this flueintotwo. passages, the passage at the right of the plate 14 in Fig. 1, in the illustrative embodiment, carrying the gases upward, such gases then passing over the "top of the plate 1d and downward overthe tubes 15 of the economizer, these tubes extending between banks of headers 16 on either side of the, flue ina well-known manner, so that the water passing through the economizer will flow back and forth across the. flue and, at the same time, longitudinally thereof, the water in let, in the illustrative embodiment, being indicated at 17 and the-water outlet atlS, the, water thus flowing in a generally upward direction in thefor-m shown 'while the-gases the tubes 15.

As is well known, heating surf-aces exposed to heating gases become coated with soot and other deposits which :prevent the ing surfaces, and it is advantageous, therefore, to clean such deposits. from these surfaces from time to time. This is ordinarily accomplished by so-called"soot blowers by which jets: of fluid, usually steam,, are (11'':

flow in a generally downward direction over transfer of heat fromthe gases to-the, heat rected against the surfaces to be cleaned."

of the operator, so that, for instance, steam may be used from time to time to clean the heating surfaces from soot and when the deposits become of such a character, in spiteof this blowing with steam, as to make washing with water or other cleaning'fluid desirable, then the operator may direct such washing fluid to the heating surfaces through the same elements as are used for applying the steam.

As soot blowers have been heretofore arranged, when extending across a row of tubes to be cleaned, a plurality of openings or nozzles has been provided inthe elementin sufficie nt number to clean all of the surfaces simultaneously, the blower element being made rotatable so as to increase the area cleansable in a plane at right-angles to the axis of rotation of the blower element. This involves not only providing a very large number of nozzles, but also involves the use, of aconsiderable.quantity of steam at any given instant during the cleaning operation.

Furthermore, where the boiler or other appara-tus to be cleaned is very wide, the number ofnozzles-taking steam from the element becomes so large that the steam is unevenly distributed across the boiler, and to avoid this, it has beenuecessary to provide a sepa rate element extending in from each side of the boiler, half wayacross the. boiler. In the arrangementillustrated, I have. shown an element which avoids all of these d-ifli- V To provide for any leakage of fluid past the joint between the sleeve 24 and pipe 19, an opening 4:5 may be provided in support 22 to permit such fluid to escape.

It will be understood that the embodiment of my invention may be widely varied and that certain portions of it may be used without other portions.

l i hile I have shown my invention applied to the cleaning of water tubes, it will obviously be applicable to the cleaning of any heating surfaces, particularly when such surfaces are form-ed as spaced tubes, or ducts, as in air heaters, and the like.

I claim:

1. In a device for cleaning the surfaces of uniformly spaced tubes exposed to gases, a rotatab-ly mounted tubular element extending across the tubes and having openings to direct jets of cleaning fluid against such tubes, the distance between said openings along said element being a multiple of the distance between two adjacent tubes, means torotate said element, a member rotatable with said element and arranged to be rotated relatively thereto, means to rotate said member relative 1y to said element and connections between said element and said member to move said element lengthwise by such relative rotation.

2. In a device for cleaning the surfaces of uniformly spaced tubes exposed to gases, a rotatably mounted tubular element extending across the tubes and having openings to direct jets of cleaning fluid against such tubes, the distance between said openings along said element being a multiple of the distance between two adjacent tubes, means to rotate said element, a member rotatable with said element and arranged to be rotated relatively. thereto, means to rotate said member relatively to said element, connections between said element and said member to move said element lengthwise by such relative rotation, and means whereby said element may be retained against longitudinal movement after it has moved a distance equal to the distance between two adjacent tubes.

3. In a heating surface cleaning device, a pipe having means to project cleaning fluid. on to said surface, means supporting said pipe and permitting its being rotated and moved lengthwise, an operating element, and a yielding connection between said element and pipe and adapted upon operation of said element to cause rotation of said pipe or to yield and cause lengthwise movement thereof.

l. In a heating surface leaning device, a pipe having means to project cleaning fluid on to said surface, means supporting said pipe and permitting its being rotated and moved lengthwise, an operating element, a connection between said element and pipe and including two members, one secured to said pipe and one to said element, and means resiliently holding said members against relative movement.

5. In a heating surface cleaning device, a pipe having means to project cleaning fluid on to said surface, means supporting said pipe and permitting its being rotated and moved lengthwise, an operating element, a connection between said element and pipe and including two members, one secured to said pipe and one to'said element, means resiliently holding s'aidmembers' against relative movement, and means torelease said holdingnreans. j I I 6. In a heating'surface cleaning device, a pipe having means to project cleaning fluid on to said surface, means supporting said pipe and permitting its being rotated and moved lengthwise,fa1r operatingelement, a}

connection between said element and pipe and lncludmg two members, one secured to said pipe and one to said element, means v yieldingly holding said members in engagement with each other, rotative operation of said element being transmitted through said members to said pipe, and means to change whereby'rotative movement of said element is imparted to said pipe.

.8.In a heating surface cleaning device, a

pipe having means to project cleaning fluid 7 on tosaid surface, means supporting said pipe and permitting its being rotated and moved lengthwise, a rotatably mounted operating element and a connection between said element and said pipe comprising an inclined slot and pin, a recess in a side of said slot in which said pin is received, whereby rotative movement of said element is imparted to said pipe, and means to release said pin from said recess, whereby continued rotation of said element will cause lengthwise movement of said pipe. I v v 9. In a heating surface cleaning devices pipe having means to project cleaning fluid on to said surface, means supporting said. pipe'and permitting its being rotated and moved lengthwise, a rotatably mounted element, a member secured to said element, a second member secured to said pipe, onoof said members having an inclined slot and the other having a pin engaged in said slot, said slot having a recess in one side thereof into which the pin may be received, whereby rotative movement of said element is transmitted to said pipe, and means for holding one Car of said members stationary with respectto the other, whereby said pin is released from said recess and moved along said slot to cause lengthwise movement of said pipe. 7

v 10. In a heating surface cleaning device, a pipe having means to project cleaning fluid on to said surface, means supporting said pipe and permitting its being rotated and moved lengthwise, two sleeves rotatably mounted concentrically with respect to each other, and to said pipe, and operativeconnections between each of said sleeves and said pipe, one of said connections being adapted to cause rotation of said pipe upon rotation of one of said sleeves and the other of said connections being adapted to cause lengthwise movement of the pipe upon rotation of one sleeve with respect to the other.

11. In a heating surface cleaningdevice, a pipe having means to project cleaning fluid on to said surface, means supporting said pipe and permitting its being rotatetl and moved lengthwise, a rotatable operating element, means to change rotating movement of said element into rotation of said pipe, and means to change rotating movement of said element into longitudinal move ment of the pipe.

, DAVID S. JACOBUS, 

